Lol at this being the internet version of all those "I heard snoop dog saw forshizzle, hes stealing the bay's lingo" threads from 10 years ago. Every fucking week someone would post some whiny ass thread claiming that everytime a word gets used on an album the rapper needs to give props to the neighborhood it originated at. I would be surprised if "breh" didn't come from a bunch of different sources simultaneosly, its a common fucking word.